Imprint Contact 868 Videos
900.000 Callings


Wheel change
Save Energy

Video Body
Video History
Video Body Development 1
Video Body Development 2
Video Coachwork - Package
Video NCAP norms
Video Body Repair 1
Video Body Repair 2
Video Model development
Video Efficient Develop.
Video Design 1
Video Design 2
Video Design 3
Video Design 4
Video Design 5
Video Design 6
Video Design 7
Video Design 8
Video Carbody Terms
Video Oldtimer Restoration
Video Wind-tunnel
Video Ferrari F 1
Video Drift
Video Aerodyn. Resist. 1
Video Aerodyn. Resist. 2
Video Aerodyn. Resist. 3
Video Frontend
Video Deep-drawing
Video Bending
Video Profile Rolling
Video Aluminum Body 1
Video Aluminum Body 2
Video Aluminum Body 3
Video Glass Roof
Video Panorama Glass Roof
Video Bulletproof Glass
Video Cross Section
Video Body (rear part)
Video Vehicle Floor Trim
Video Interior Decoration
Video Autom. dimming mirror
Video Seat 1
Video Seat 2
Video Folding rear seats
Video Impact Energy
Video Scrap Recycling 1
Video Scrap Recycling 2
Video High roof cars
Video Sports Utility Veh.
Video Minivan
Video Convertible
Video Folding Roof
Video Body (convertible)
Video Convertible study Seat
Video Convertible Body
Video Body Range
Video Rollover-protection
Video Body (transporter)
Video Aerodynamic (F-1)
Video Glass 1
Video Glass 2
Video Glass 3
Video Glass 4
Video Glass 5
Video Glass 6
Video Window tinting
Video Car wash 1
Video Car wash 2
Video Car wash 3
Video Paintwork 1
Video Paintwork 2
Video Paintwork 3
Video Color Matching
Video Car Wrap
Video Plastic coating
Video Polishing
Video Small Dents
Video Large Dents
Video Bumpers
Video Two-part Door
Video Sectional Repair
Video Straight. Equipment
Video Hydr. Body Repair
Video Repair Bench 1
Video Repair Bench 2
Video Pange and Flange Tool
Video Screw Production
Video Tin-plate
Video Alum. welding

Video Body 1
Video Body 2
Video Comfort - Interior 1
Video Comfort - Interior 2

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Belt drive


The belt drive should, with as little energy loss, and a minimum of servicing through retensioning as possible, transfer a relatively high amount of torque to an ever increasing number of auxilliary components. A longer life and a lower breakdown danger is reached with open-flank fan belts and flat ribbed belts. In addition, smaller enlacement radii and thus, greater transmission ratios are possible, also - if the pre-tension is not too high - the prevention of belt-slipping.


In contrast to the timing-belt, the energy of the belt drive is utilised by pressure force, and not by it's shape (gear-teeth). Originally a fan belt was used to drive the generator and the cooling. If more torque was to be transferred, and the belt threatened to slip, several fan belts, and their respective pulley-wheels, were mounted parallel, e.g., in the air cooling of trucks.
In the meantime, the motor car generators have become stronger and servo-pumps or air-conditioning compressors have been added. If the fan belt is not sufficiently tensioned, it has a tendency, particularly in the final stages of the power steering, to slip, thus causing a very loud screeching noises. If the fan belt is too tight, the front bearings of the auxilliary components are overburdened.
Thus, the time has arrived for the flat- or the wedge-shaped ribbed-belt. In addition, it drives, with its rear-side, (picture 3) the closely packed components. One disadvantage, in particular in transverse mounted engines: It is a little broader and increases the construction length slightly. An additional advantage is, the energy loss when tranferring torque is lower.
Even though the service-minimising has made vast progress, the belt drive - if it has not been coupled with a complicated vibration prevention - has not yet been able to benefit. whereby, the generator, and other components, even the waterpump, can be adjusted. Through the presence of a built-in spring, the screws can be re-tightened directly after loosening them.
If the servicing has been sloppily done, the ability to transfer torque sinks when the generator is more heavily burdened. The belt slips more and more and one runs the risk of breaking down somewhere with a discharged battery.               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

Our E-Book advertising